iron pyrite separation

Request PDF | On Nov 1, 2023, Wenbo Li and others published Recovery of iron from pyrite cinder by suspension magnetization roasting-magnetic separation method: …

Separation and Purification Technology. Volume 51, Issue 3 ... (II) adsorption abilities of pyrite and synthetic iron sulphide (SIS) were studied. Experiments were carried out as a function of pH, Cd(II) concentration, contact time and temperature. Maximum adsorption yields for pyrite and SIS were determined to be 34.2% and 65.8% ...

The pyrolysis slag used in this study comes from Hunan, China, which is a solid product obtained by pyrolysis of sulfide concentrates. The main chemical components are shown in Table 1, and the XRD spectrum of the sample is shown in Fig. 1.As seen from Table 1 and Fig. 1, pyrrhotite (Fe 7 S 8) is the main iron-containing phase.The iron …

Separation of pyrite and chalcopyrite in deionized water. Particle size −74 + 38 µm. pH = 8 fixed with HCl and NaOH. XFG-II microflotation cell. ... Pyrite, being the most abundant iron sulfide mineral, is commonly associated as a gangue mineral from base metals such as copper, lead, and zinc ...

Process. 69 (2003) 87–100; Y. Peng, S. Grano, D. Fornasiero, J. Ralston, Control of grinding conditions in the flotation of galena and its separation from pyrite, Int. J. Miner. Process. 70 (2003) 67–82). In the current study, the effect of iron contamination on the flotation of galena and chalcopyrite on a particle size basis was investigated.

Separating chalcopyrite, an important copper-containing ore, from pyrite is an important mineral-processing objective. Herein, we report the synthesis of S-hydroxyethyl-O-isobutyl xanthate (HEIBX), a novel surfactant bearing both hydroxyl and thione groups, through the attachment of a hydroxyethyl group to sodium isobutyl …

pyrite, a naturally occurring iron disulfide mineral. The name comes from the Greek word pyr, "fire," because pyrite emits sparks when struck by metal. Pyrite is called fool's gold; to the novice its colour is deceptively similar to that of a gold nugget. Nodules of pyrite have been found in prehistoric burial mounds, which suggests their ...

After magnetic separation, the Fe 2 O 3 content decreased from 5.58% for the raw gangue to 1.00% for the nonmagnetic products of gangues calcined for 60–120 min. Retention of the strongly magnetic magnetite, which was an intermediate product in the oxidation of pyrite to hematite, enabled the effective removal of iron from the gangue ...

Transition metal doped pyrite (FeS2) thin films: structural properties and evaluation of optical band gap energies. Iron pyrite (FeS2) is a semiconductor comprised of earth-abundant elements and has the potential to be a low cost photovoltaic material with comparatively low toxicity. The properties of transition….

To separate products of the mechanochemical reaction of pyrite and Al metal powder (Fe-Al 2 S 3 compound), selective leaching method was chosen wherein aluminum sulfide was dissolved and iron remained as leach residue. The selective leaching experiments were carried out in a 250 ml beaker for 45 min at 80 °C using 1.5 M NaOH …

What is Pyrite? Pyrite is a brass-yellow mineral with a bright metallic luster.It has a chemical composition of iron sulfide (FeS 2) and is the most common sulfide mineral.It forms at high and low temperatures and occurs, usually in small quantities, in igneous, metamorphic, and sedimentary rocks worldwide. Pyrite is so common that many …

Reduction–magnetic separation has been proved as one of the most effective ways to separate iron mineral and gangue [15, 16]. The sodium salt is an effective additive [17] …

Recovery of Iron from Pyrite Cinder Containing Non-ferrous Metals Using High-Temperature Chloridizing-Reduction-Magnetic Separation. Published: 18 January …

Through magnetization roasting followed by magnetic separation, 94.70% of iron was extracted from the tailing, and the concentrate with an iron grade of 61.03% was obtained, after 30.0 min of roasting at 800 °C, 1.0 g of pyrite, 16.0 g of the tailing, nitrogen flow rate of 100.0 mL/min, magnetic field intensity of 130.0 kA/m and magnetic ...

The results show that when pyrite cinder briquettes with 5% borax were pre-oxidized at 1050 °C for 10 min, and reduced at 1050 °C for 80 min, with the grinding fineness (<0.44 mm) passing 81% ...

In addition, during hydrometallurgical processes of non-ferrous metals, pyrite causes iron to enter the solution, ... The synergistic effect of lime (CaO) and TCSS caused a strong depression of pyrite through its flotation separation from chalcopyrite in a wide pH range of 7–12. The metallurgical responses showed that the combination of lime ...

The first application of the magnetic separation process on industrial minerals is to remove iron containing compounds and minerals such as hematite-limonite [5], taconite [6], pyrite (FeS2), and ...

The separation of chalcopyrite and pyite is not fully solved, and thus more efficient depressants are still needed in industry. This paper used potassium permanganate (KMnO 4) as a pyrite depressant to separate pyrite from chalcopyrite.Flotation and contact angle results indicated that pyrite could be depressed by KMnO 4 at pH 7, while KMnO …

Recovery of iron from pyrite cinder by suspension magnetization roasting-magnetic separation method: Process optimization and mechanism study | Semantic …

1. Introduction. Pyrite cinder (PyC), a form of sulfuric acid residue and waste material generated by sulfuric acid manufacturing plants that exploit pyrite (FeS 2), is rich in iron and contains appreciable quantities of hazardous heavy metals, including Cu, Pb, Zn, As, etc. [1, 2].The release of acids and toxic substances from PyC poses potential …

Recovery of iron from waste slag of pyrite processing using reduction roasting magnetic separation method. G. F. Zhang*1,2, Q. R. Yang1, Y. D. Yang2, P. Wu2 and A. …

the iron grade of pyrite cinder [13, 14]. Although the recovery rate of iron and separation efficiency of iron mineral and gangue are significantly improved, the sepa-ration efficiency is still insufficient. Reduction–magnetic separation has been proved as one of the most effective ways to separate iron mineral and gangue [15, 16].

A recycling process of iron from red mud by magnetic separation is proposed, in which iron oxide (Fe 2 O 3) in red mud transforms to magnetite (Fe 3 O 4) by anaerobic co-roasting with pyrite (FeS 2).TG-DTA and XRD results showed that hematite was reduced to magnetite by the thermo-decomposed compounds (iron monosulfide, …

The current study investigated the potential iron contamination removal from the feed to the hydrometallurgical process by calcination followed by magnetic separation.

The selective separation of pyrite and serpentine minerals was made possible as a consequence of the restoration of the PBX collector's selective collecting capability on the surface of pyrite. The chemical interaction between the phosphate in HEDP and the magnesium on the surface of serpentine was confirmed by the findings of …

However, there are still many difficulties in separation of chalcopyrite and pyrite, because the copper ion has an activation effect on pyrite, while the iron ion has depression effect on chalcopyrite, which leads to poor separation of chalcopyrite and pyrite (Khoso et al., 2020). At present, separation of chalcopyrite and pyrite is mainly by a ...

Chen et al. applied four different reagents (H 2 O 2, K 2 Cr 2 O 7, KMnO 4, and NaClO) to prompt the selective flotation separation of pyrite from arsenopyrite. It was found that H 2 O 2 presented the more positive effects on the flotation separation of pyrite and arsenopyrite [13]. To sum up, oxidation-based surface modification was critical ...

Pyrite is separated from other minerals mainly by flotation. However, the hydrophilicity of pyrite is affected by many factors, causing it to easily enter the concentrate and consequently reduce the quality of concentrate. Highly efficient pyrite depressants can be selectively adsorbed on the surface of pyrite to improve its hydrophilicity, thereby …

Thus, this paper uses sodium salt additive and reduction–magnetic separation method to investigate the effect of sodium salt on the separation of iron …

The objectives of the present work are focused on: compare various options for recovery of iron from the waste slag and select the most advantageous option for …

The grinding process plays a crucial role in the floatability of mineral. The present study proposes a scheme to assist in the flotation separation of galena and pyrite by optimizing the choice of grinding media. The effects of grinding media (cast iron balls, steel balls containing 18% chromium, and steel balls containing 12% chromium) on the …

The activation properties of ammonium oxalate on the flotation of pyrite and arsenopyrite in the lime system were studied in this work. Single mineral flotation tests showed that the ammonium oxalate strongly activated pyrite in high alkalinity and high Ca 2+ system, whereas arsenopyrite was almost unaffected. In mineral mixtures tests, the …

As both the carboxymethyl groups and hydroxyl groups of CMC can also interact with pyrite surface iron sites (Bicak et al., 2007), it is likely that PAX and CMC will compete for the same adsorption sites on pyrite surface. ... CMC can be used to depress chlorite in the flotation separation of pyrite and chlorite, but it also affects the ...

@article{osti_5722257, title = {Magnetic separation of iron pyrite from coal}, author = {Mawardi, O K}, abstractNote = {A high gradient magnetic separator particularly for the desulfurization of coal is described. The process and apparatus are continuous and suitable for high volumes of material in a fluid stream. They employ the concept of a high gradient …

Keywords: pyrite cinder; carbothermic reduction; magnetic separation; metallic iron powder 1. Introduction Pyrite cinders are produced as a by-product of the sulfuric acid industry, containing ...